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PatchSiren cyber security CVE debrief

CVE-2024-44987 Siemens CVE debrief

A use-after-free (UAF) vulnerability in the Linux kernel's IPv6 networking stack, specifically within the ip6_send_skb() function, affects Siemens industrial networking products. The vulnerability was resolved in the upstream Linux kernel and requires local access with low privileges to exploit, potentially leading to denial of service conditions.

Vendor
Siemens
Product
RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2025-08-12
Original CVE updated
2026-02-25
Advisory published
2025-08-12
Advisory updated
2026-02-25

Who should care

Organizations operating Siemens industrial networking infrastructure, particularly in critical infrastructure and manufacturing environments utilizing RUGGEDCOM or SCALANCE product families. Security teams responsible for OT/ICS network segmentation and patch management should prioritize assessment.

Technical summary

CVE-2024-44987 is a use-after-free vulnerability in the Linux kernel's IPv6 implementation, specifically in the ip6_send_skb() function. The vulnerability has been resolved in upstream Linux kernel development. Siemens industrial networking products incorporating affected Linux kernel versions are impacted, including RUGGEDCOM RST2428P (6GK6242-6PA00), SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, and SCALANCE XCM-/XRM-/XCH-/XRH-300 family devices. The CVSS 3.1 score of 5.5 (MEDIUM) reflects a local attack vector requiring low privileges, with no confidentiality or integrity impact but high availability impact. Exploitation could result in denial of service conditions on affected systems.

Defensive priority

medium

Recommended defensive actions

  • Apply vendor-provided firmware updates to V3.2 or later for RUGGEDCOM RST2428P and SCALANCE XCM-/XRM-/XCH-/XRH-300 family devices
  • For SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, consult Siemens ProductCERT advisory SSA-355557 for specific configuration guidance and update availability
  • Implement network segmentation to limit local access to affected industrial control devices
  • Monitor for anomalous IPv6 traffic patterns that may indicate exploitation attempts
  • Review and apply CISA ICS recommended practices for defense-in-depth strategies

Evidence notes

The vulnerability description indicates a resolved use-after-free condition in ip6_send_skb(). Siemens ProductCERT advisory SSA-355557 (referenced via CISA ICSA-25-226-07) identifies affected products and remediation paths. The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) confirms local attack vector with availability impact.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-44987 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-44987

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2024-44987 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-44987

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-226-07.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-355557.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-355557.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-226-07

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.